drm: rcar-du: Add Gen3 HDMI encoder support (40d0fa70) · Commits · 戴 / test

drivers/gpu/drm/rcar-du/Kconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -11,6 +11,13 @@ config DRM_RCAR_DU
		Choose this option if you have an R-Car chipset.
		If M is selected the module will be called rcar-du-drm.

		config DRM_RCAR_DW_HDMI
		tristate "R-Car DU Gen3 HDMI Encoder Support"
		depends on DRM && OF
		select DRM_DW_HDMI
		help
		Enable support for R-Car Gen3 internal HDMI encoder.

		config DRM_RCAR_LVDS
		bool "R-Car DU LVDS Encoder Support"
		depends on DRM_RCAR_DU

drivers/gpu/drm/rcar-du/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -11,3 +11,4 @@ rcar-du-drm-$(CONFIG_DRM_RCAR_LVDS) += rcar_du_lvdsenc.o
		rcar-du-drm-$(CONFIG_DRM_RCAR_VSP) += rcar_du_vsp.o

		obj-$(CONFIG_DRM_RCAR_DU) += rcar-du-drm.o
		obj-$(CONFIG_DRM_RCAR_DW_HDMI) += rcar_dw_hdmi.o

drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c

0 → 100644

+100 −0

Original line number	Diff line number	Diff line
		/*
		* R-Car Gen3 HDMI PHY
		*
		* Copyright (C) 2016 Renesas Electronics Corporation
		*
		* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*/

		#include <linux/module.h>
		#include <linux/platform_device.h>

		#include <drm/bridge/dw_hdmi.h>

		#define RCAR_HDMI_PHY_OPMODE_PLLCFG 0x06 /* Mode of operation and PLL dividers */
		#define RCAR_HDMI_PHY_PLLCURRGMPCTRL 0x10 /* PLL current and Gmp (conductance) */
		#define RCAR_HDMI_PHY_PLLDIVCTRL 0x11 /* PLL dividers */

		struct rcar_hdmi_phy_params {
		unsigned long mpixelclock;
		u16 opmode_div; /* Mode of operation and PLL dividers */
		u16 curr_gmp; /* PLL current and Gmp (conductance) */
		u16 div; /* PLL dividers */
		};

		static const struct rcar_hdmi_phy_params rcar_hdmi_phy_params[] = {
		{ 35500000, 0x0003, 0x0344, 0x0328 },
		{ 44900000, 0x0003, 0x0285, 0x0128 },
		{ 71000000, 0x0002, 0x1184, 0x0314 },
		{ 90000000, 0x0002, 0x1144, 0x0114 },
		{ 140250000, 0x0001, 0x20c4, 0x030a },
		{ 182750000, 0x0001, 0x2084, 0x010a },
		{ 281250000, 0x0000, 0x0084, 0x0305 },
		{ 297000000, 0x0000, 0x0084, 0x0105 },
		{ ~0UL, 0x0000, 0x0000, 0x0000 },
		};

		static int rcar_hdmi_phy_configure(struct dw_hdmi *hdmi,
		const struct dw_hdmi_plat_data *pdata,
		unsigned long mpixelclock)
		{
		const struct rcar_hdmi_phy_params *params = rcar_hdmi_phy_params;

		for (; params && params->mpixelclock != ~0UL; ++params) {
		if (mpixelclock <= params->mpixelclock)
		break;
		}

		if (params->mpixelclock == ~0UL)
		return -EINVAL;

		dw_hdmi_phy_i2c_write(hdmi, params->opmode_div,
		RCAR_HDMI_PHY_OPMODE_PLLCFG);
		dw_hdmi_phy_i2c_write(hdmi, params->curr_gmp,
		RCAR_HDMI_PHY_PLLCURRGMPCTRL);
		dw_hdmi_phy_i2c_write(hdmi, params->div, RCAR_HDMI_PHY_PLLDIVCTRL);

		return 0;
		}

		static const struct dw_hdmi_plat_data rcar_dw_hdmi_plat_data = {
		.configure_phy = rcar_hdmi_phy_configure,
		};

		static int rcar_dw_hdmi_probe(struct platform_device *pdev)
		{
		return dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
		}

		static int rcar_dw_hdmi_remove(struct platform_device *pdev)
		{
		dw_hdmi_remove(pdev);

		return 0;
		}

		static const struct of_device_id rcar_dw_hdmi_of_table[] = {
		{ .compatible = "renesas,rcar-gen3-hdmi" },
		{ /* Sentinel */ },
		};
		MODULE_DEVICE_TABLE(of, rcar_dw_hdmi_of_table);

		static struct platform_driver rcar_dw_hdmi_platform_driver = {
		.probe = rcar_dw_hdmi_probe,
		.remove = rcar_dw_hdmi_remove,
		.driver = {
		.name = "rcar-dw-hdmi",
		.of_match_table = rcar_dw_hdmi_of_table,
		},
		};

		module_platform_driver(rcar_dw_hdmi_platform_driver);

		MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
		MODULE_DESCRIPTION("Renesas R-Car Gen3 HDMI Encoder Driver");
		MODULE_LICENSE("GPL");

Admin message