The Synopsys ARC SoCs (like HSDK4xD) include on-chip DesignWare HDMI encoders. Support them with a platform driver to provide platform glue data to the dw-hdmi driver.
Signed-off-by: Eugeniy Paltsev Eugeniy.Paltsev@synopsys.com --- MAINTAINERS | 6 ++ drivers/gpu/drm/Makefile | 2 +- drivers/gpu/drm/arc/Kconfig | 7 ++ drivers/gpu/drm/arc/Makefile | 1 + drivers/gpu/drm/arc/arc-dw-hdmi.c | 126 ++++++++++++++++++++++++++++++ 5 files changed, 141 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/arc/arc-dw-hdmi.c
diff --git a/MAINTAINERS b/MAINTAINERS index a6fbdf354d34..a6dd992c5f95 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1258,6 +1258,12 @@ S: Supported F: drivers/gpu/drm/arc/ F: Documentation/devicetree/bindings/display/snps,arcpgu.txt
+ARC DW HDMI DRIVER +M: Eugeniy Paltsev Eugeniy.Paltsev@synopsys.com +S: Supported +F: drivers/gpu/drm/arc/arc-dw-hdmi.c +F: Documentation/devicetree/bindings/display/bridge/snps,arc-dw-hdmi.txt + ARCNET NETWORK LAYER M: Michael Grzeschik m.grzeschik@pengutronix.de L: netdev@vger.kernel.org diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 6493088a0fdd..5b0bcf7f45cd 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -109,7 +109,7 @@ obj-y += panel/ obj-y += bridge/ obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/ obj-$(CONFIG_DRM_ETNAVIV) += etnaviv/ -obj-$(CONFIG_DRM_ARCPGU)+= arc/ +obj-y += arc/ obj-y += hisilicon/ obj-$(CONFIG_DRM_ZTE) += zte/ obj-$(CONFIG_DRM_MXSFB) += mxsfb/ diff --git a/drivers/gpu/drm/arc/Kconfig b/drivers/gpu/drm/arc/Kconfig index e8f3d63e0b91..baec9d2a4fba 100644 --- a/drivers/gpu/drm/arc/Kconfig +++ b/drivers/gpu/drm/arc/Kconfig @@ -8,3 +8,10 @@ config DRM_ARCPGU Choose this option if you have an ARC PGU controller.
If M is selected the module will be called arcpgu. + +config DRM_ARC_DW_HDMI + tristate "ARC DW HDMI" + depends on DRM && OF + select DRM_DW_HDMI + help + Synopsys DW HDMI driver for various ARC development boards diff --git a/drivers/gpu/drm/arc/Makefile b/drivers/gpu/drm/arc/Makefile index c7028b7427b3..7a156d8c2c3c 100644 --- a/drivers/gpu/drm/arc/Makefile +++ b/drivers/gpu/drm/arc/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only arcpgu-y := arcpgu_crtc.o arcpgu_hdmi.o arcpgu_sim.o arcpgu_drv.o obj-$(CONFIG_DRM_ARCPGU) += arcpgu.o +obj-$(CONFIG_DRM_ARC_DW_HDMI) += arc-dw-hdmi.o diff --git a/drivers/gpu/drm/arc/arc-dw-hdmi.c b/drivers/gpu/drm/arc/arc-dw-hdmi.c new file mode 100644 index 000000000000..4869dd668a51 --- /dev/null +++ b/drivers/gpu/drm/arc/arc-dw-hdmi.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Synopsys DW HDMI driver for various ARC development boards +// +// Copyright (C) 2020 Synopsys +// Author: Eugeniy Paltsev Eugeniy.Paltsev@synopsys.com + +#include <linux/component.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <drm/bridge/dw_hdmi.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_encoder_slave.h> +#include <drm/drm_of.h> + +static const struct dw_hdmi_mpll_config snps_hdmi_mpll_cfg[] = { + { + 27000000, { + { 0x00B3, 0x0000 }, + { 0x00B3, 0x0000 }, + { 0x00B3, 0x0000 } + }, + }, { + 74250000, { + { 0x0072, 0x0001}, + { 0x0072, 0x0001}, + { 0x0072, 0x0001} + }, + }, { + 148500000, { + { 0x0051, 0x0002}, + { 0x0051, 0x0002}, + { 0x0051, 0x0002} + }, + }, { + ~0UL, { + { 0x00B3, 0x0000 }, + { 0x00B3, 0x0000 }, + { 0x00B3, 0x0000 }, + }, + } +}; + +static const struct dw_hdmi_curr_ctrl snps_hdmi_cur_ctr[] = { + /* pixelclk bpp8 bpp10 bpp12 */ + { 27000000, { 0x0000, 0x0000, 0x0000 }, }, + { 74250000, { 0x0008, 0x0008, 0x0008 }, }, + { 148500000, { 0x001b, 0x001b, 0x001b }, }, + { ~0UL, { 0x0000, 0x0000, 0x0000 }, } +}; + + +static const struct dw_hdmi_phy_config snps_hdmi_phy_config[] = { + /* pixelclk symbol term vlev */ + { 27000000, 0x8009, 0x0004, 0x0232}, + { 74250000, 0x8009, 0x0004, 0x0232}, + { 148500000, 0x8009, 0x0004, 0x0232}, + { ~0UL, 0x8009, 0x0004, 0x0232} +}; + +static enum drm_mode_status snps_dw_hdmi_mode_valid(struct drm_connector *con, + const struct drm_display_mode *mode) +{ + return MODE_OK; +} + +static struct dw_hdmi_plat_data snps_dw_hdmi_drv_data = { + .mpll_cfg = snps_hdmi_mpll_cfg, + .cur_ctr = snps_hdmi_cur_ctr, + .phy_config = snps_hdmi_phy_config, + .mode_valid = snps_dw_hdmi_mode_valid, +}; + +static const struct of_device_id snps_dw_hdmi_dt_ids[] = { + { + .compatible = "snps,dw-hdmi-hsdk", + .data = &snps_dw_hdmi_drv_data + }, { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, snps_dw_hdmi_dt_ids); + +static int snps_dw_hdmi_probe(struct platform_device *pdev) +{ + const struct dw_hdmi_plat_data *plat_data; + const struct of_device_id *match; + struct dw_hdmi *hdmi; + + if (!pdev->dev.of_node) + return -ENODEV; + + match = of_match_node(snps_dw_hdmi_dt_ids, pdev->dev.of_node); + plat_data = match->data; + + hdmi = dw_hdmi_probe(pdev, plat_data); + if (IS_ERR(hdmi)) + return PTR_ERR(hdmi); + + platform_set_drvdata(pdev, hdmi); + + return 0; +} + +static int snps_dw_hdmi_remove(struct platform_device *pdev) +{ + struct dw_hdmi *hdmi = platform_get_drvdata(pdev); + + dw_hdmi_remove(hdmi); + + return 0; +} + +static struct platform_driver snps_dw_hdmi_platform_driver = { + .probe = snps_dw_hdmi_probe, + .remove = snps_dw_hdmi_remove, + .driver = { + .name = KBUILD_MODNAME, + .of_match_table = snps_dw_hdmi_dt_ids, + }, +}; +module_platform_driver(snps_dw_hdmi_platform_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("ARC specific DW-HDMI driver extension"); +MODULE_AUTHOR("Eugeniy Paltsev Eugeniy.Paltsev@synopsys.com");