Add j721e wrapper for mhdp, which sets up the clock and data muxes.
Signed-off-by: Jyri Sarha jsarha@ti.com Signed-off-by: Yuti Amonkar yamonkar@cadence.com Signed-off-by: Swapnil Jakhade sjakhade@cadence.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/bridge/Kconfig | 13 ++++ drivers/gpu/drm/bridge/Makefile | 5 ++ drivers/gpu/drm/bridge/cdns-mhdp-core.c | 15 +++++ drivers/gpu/drm/bridge/cdns-mhdp-core.h | 1 + drivers/gpu/drm/bridge/cdns-mhdp-j721e.c | 75 ++++++++++++++++++++++++ drivers/gpu/drm/bridge/cdns-mhdp-j721e.h | 19 ++++++ 6 files changed, 128 insertions(+) create mode 100644 drivers/gpu/drm/bridge/cdns-mhdp-j721e.c create mode 100644 drivers/gpu/drm/bridge/cdns-mhdp-j721e.h
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 6a4c324302a8..8c1738653b7e 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -38,6 +38,19 @@ config DRM_CDNS_MHDP It takes a DPI stream as input and outputs it encoded in DP format.
+if DRM_CDNS_MHDP + +config DRM_CDNS_MHDP_J721E + depends on ARCH_K3_J721E_SOC + 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 + config DRM_CHRONTEL_CH7033 tristate "Chrontel CH7033 Video Encoder" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index 0080a9f80f29..f81d606e9598 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -2,6 +2,11 @@ obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o obj-$(CONFIG_DRM_CDNS_MHDP) += cdns-mhdp.o cdns-mhdp-objs := cdns-mhdp-core.o + +ifeq ($(CONFIG_DRM_CDNS_MHDP_J721E),y) + cdns-mhdp-objs += cdns-mhdp-j721e.o +endif + obj-$(CONFIG_DRM_CHRONTEL_CH7033) += chrontel-ch7033.o obj-$(CONFIG_DRM_DISPLAY_CONNECTOR) += display-connector.o obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o diff --git a/drivers/gpu/drm/bridge/cdns-mhdp-core.c b/drivers/gpu/drm/bridge/cdns-mhdp-core.c index b16c5503cef1..eeb33c54334f 100644 --- a/drivers/gpu/drm/bridge/cdns-mhdp-core.c +++ b/drivers/gpu/drm/bridge/cdns-mhdp-core.c @@ -38,6 +38,8 @@
#include "cdns-mhdp-core.h"
+#include "cdns-mhdp-j721e.h" + static DECLARE_WAIT_QUEUE_HEAD(fw_load_wq);
static int cdns_mhdp_mailbox_read(struct cdns_mhdp_device *mhdp) @@ -1691,6 +1693,16 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
conn->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH;
+ if (of_device_is_compatible(mhdp->dev->of_node, "ti,j721e-mhdp8546")) + /* + * DP is internal to J7 SoC and we need to use DRIVE_POSEDGE + * in the display controller. This is achieved for the time being + * by defining SAMPLE_NEGEDGE here. + */ + conn->display_info.bus_flags |= + DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE | + DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE; + ret = drm_connector_attach_encoder(conn, bridge->encoder); if (ret) { dev_err(mhdp->dev, "failed to attach connector to encoder\n"); @@ -2470,6 +2482,9 @@ static int cdns_mhdp_remove(struct platform_device *pdev)
static const struct of_device_id mhdp_ids[] = { { .compatible = "cdns,mhdp8546", }, +#ifdef CONFIG_DRM_CDNS_MHDP_J721E + { .compatible = "ti,j721e-mhdp8546", .data = &mhdp_ti_j721e_ops }, +#endif { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, mhdp_ids); diff --git a/drivers/gpu/drm/bridge/cdns-mhdp-core.h b/drivers/gpu/drm/bridge/cdns-mhdp-core.h index d1bfcdef4249..4e176698caca 100644 --- a/drivers/gpu/drm/bridge/cdns-mhdp-core.h +++ b/drivers/gpu/drm/bridge/cdns-mhdp-core.h @@ -343,6 +343,7 @@ struct cdns_mhdp_bridge_state {
struct cdns_mhdp_device { void __iomem *regs; + void __iomem *j721e_regs;
struct device *dev; struct clk *clk; diff --git a/drivers/gpu/drm/bridge/cdns-mhdp-j721e.c b/drivers/gpu/drm/bridge/cdns-mhdp-j721e.c new file mode 100644 index 000000000000..7555c217c9a0 --- /dev/null +++ b/drivers/gpu/drm/bridge/cdns-mhdp-j721e.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * TI j721e Cadence MHDP DP wrapper + * + * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Jyri Sarha <jsarha@ti.com + */ + +#include <linux/io.h> +#include <linux/platform_device.h> + +#include "cdns-mhdp-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); + if (IS_ERR(mhdp->j721e_regs)) + return PTR_ERR(mhdp->j721e_regs); + + return 0; +} + +static void cdns_mhdp_j721e_enable(struct cdns_mhdp_device *mhdp) +{ + /* + * Eneble 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, +}; diff --git a/drivers/gpu/drm/bridge/cdns-mhdp-j721e.h b/drivers/gpu/drm/bridge/cdns-mhdp-j721e.h new file mode 100644 index 000000000000..f1ff07b82d32 --- /dev/null +++ b/drivers/gpu/drm/bridge/cdns-mhdp-j721e.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * TI j721e Cadence MHDP DP wrapper + * + * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Jyri Sarha <jsarha@ti.com + */ + +#ifndef CDNS_MHDP_J721E_H +#define CDNS_MHDP_J721E_H + +#include <linux/platform_device.h> +#include "cdns-mhdp-core.h" + +struct mhdp_platform_ops; + +extern const struct mhdp_platform_ops mhdp_ti_j721e_ops; + +#endif /* !CDNS_MHDP_J721E_H */