@@ -9,3 +9,16 @@ config DRM_CDNS_MHDP8546
bridge and is meant to be directly embedded in a SoC.
It takes a DPI stream as input and outputs it encoded
in DP format.
+
+if DRM_CDNS_MHDP8546
+
+config DRM_CDNS_MHDP8546_J721E
+ depends on ARCH_K3_J721E_SOC || COMPILE_TEST
+ bool "J721E Cadence DPI/DP wrapper support"
+ default y
+ help
+ Support J721E Cadence DPI/DP wrapper. This is a wrapper
+ which adds support for J721E related platform ops. It
+ initializes the J721E Display Port and sets up the
+ clock and data muxes.
+endif
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_DRM_CDNS_MHDP8546) += cdns-mhdp8546.o
cdns-mhdp8546-y := cdns-mhdp8546-core.o
+cdns-mhdp8546-$(CONFIG_DRM_CDNS_MHDP8546_J721E) += cdns-mhdp8546-j721e.o
@@ -50,6 +50,8 @@
#include "cdns-mhdp8546-core.h"
+#include "cdns-mhdp8546-j721e.h"
+
static int cdns_mhdp_mailbox_read(struct cdns_mhdp_device *mhdp)
{
int ret, empty;
@@ -2496,6 +2498,14 @@ static int cdns_mhdp_remove(struct platform_device *pdev)
static const struct of_device_id mhdp_ids[] = {
{ .compatible = "cdns,mhdp8546", },
+#ifdef CONFIG_DRM_CDNS_MHDP8546_J721E
+ { .compatible = "ti,j721e-mhdp8546",
+ .data = &(const struct cdns_mhdp_platform_info) {
+ .timings = &mhdp_ti_j721e_bridge_timings,
+ .ops = &mhdp_ti_j721e_ops,
+ },
+ },
+#endif
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mhdp_ids);
@@ -341,6 +341,7 @@ struct cdns_mhdp_platform_info {
struct cdns_mhdp_device {
void __iomem *regs;
+ void __iomem *j721e_regs;
struct device *dev;
struct clk *clk;
new file mode 100644
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * TI j721e Cadence MHDP8546 DP wrapper
+ *
+ * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Jyri Sarha <jsarha@ti.com>
+ */
+
+#include <linux/io.h>
+#include <linux/platform_device.h>
+
+#include "cdns-mhdp8546-j721e.h"
+
+#define REVISION 0x00
+#define DPTX_IPCFG 0x04
+#define ECC_MEM_CFG 0x08
+#define DPTX_DSC_CFG 0x0c
+#define DPTX_SRC_CFG 0x10
+#define DPTX_VIF_SECURE_MODE_CFG 0x14
+#define DPTX_VIF_CONN_STATUS 0x18
+#define PHY_CLK_STATUS 0x1c
+
+#define DPTX_SRC_AIF_EN BIT(16)
+#define DPTX_SRC_VIF_3_IN30B BIT(11)
+#define DPTX_SRC_VIF_2_IN30B BIT(10)
+#define DPTX_SRC_VIF_1_IN30B BIT(9)
+#define DPTX_SRC_VIF_0_IN30B BIT(8)
+#define DPTX_SRC_VIF_3_SEL_DPI5 BIT(7)
+#define DPTX_SRC_VIF_3_SEL_DPI3 0
+#define DPTX_SRC_VIF_2_SEL_DPI4 BIT(6)
+#define DPTX_SRC_VIF_2_SEL_DPI2 0
+#define DPTX_SRC_VIF_1_SEL_DPI3 BIT(5)
+#define DPTX_SRC_VIF_1_SEL_DPI1 0
+#define DPTX_SRC_VIF_0_SEL_DPI2 BIT(4)
+#define DPTX_SRC_VIF_0_SEL_DPI0 0
+#define DPTX_SRC_VIF_3_EN BIT(3)
+#define DPTX_SRC_VIF_2_EN BIT(2)
+#define DPTX_SRC_VIF_1_EN BIT(1)
+#define DPTX_SRC_VIF_0_EN BIT(0)
+
+/* TODO turn DPTX_IPCFG fw_mem_clk_en at pm_runtime_suspend. */
+
+static int cdns_mhdp_j721e_init(struct cdns_mhdp_device *mhdp)
+{
+ struct platform_device *pdev = to_platform_device(mhdp->dev);
+
+ mhdp->j721e_regs = devm_platform_ioremap_resource(pdev, 1);
+ return PTR_ERR_OR_ZERO(mhdp->j721e_regs);
+}
+
+static void cdns_mhdp_j721e_enable(struct cdns_mhdp_device *mhdp)
+{
+ /*
+ * Enable VIF_0 and select DPI2 as its input. DSS0 DPI0 is connected
+ * to eDP DPI2. This is the only supported SST configuration on
+ * J721E.
+ */
+ writel(DPTX_SRC_VIF_0_EN | DPTX_SRC_VIF_0_SEL_DPI2,
+ mhdp->j721e_regs + DPTX_SRC_CFG);
+}
+
+static void cdns_mhdp_j721e_disable(struct cdns_mhdp_device *mhdp)
+{
+ /* Put everything to defaults */
+ writel(0, mhdp->j721e_regs + DPTX_DSC_CFG);
+}
+
+const struct mhdp_platform_ops mhdp_ti_j721e_ops = {
+ .init = cdns_mhdp_j721e_init,
+ .enable = cdns_mhdp_j721e_enable,
+ .disable = cdns_mhdp_j721e_disable,
+};
+
+const struct drm_bridge_timings mhdp_ti_j721e_bridge_timings = {
+ .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
+ DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |
+ DRM_BUS_FLAG_DE_HIGH,
+};
new file mode 100644
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * TI j721e Cadence MHDP8546 DP wrapper
+ *
+ * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Jyri Sarha <jsarha@ti.com>
+ */
+
+#ifndef CDNS_MHDP8546_J721E_H
+#define CDNS_MHDP8546_J721E_H
+
+#include "cdns-mhdp8546-core.h"
+
+struct mhdp_platform_ops;
+
+extern const struct mhdp_platform_ops mhdp_ti_j721e_ops;
+extern const struct drm_bridge_timings mhdp_ti_j721e_bridge_timings;
+
+#endif /* !CDNS_MHDP8546_J721E_H */