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1// SPDX-License-Identifier: GPL-2.02/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.3 * Copyright (C) 2019, 2020 Paul Boddie <paul@boddie.org.uk>4 *5 * Derived from dw_hdmi-imx.c with i.MX portions removed.6 */7 8#include <linux/module.h>9#include <linux/of_platform.h>10#include <linux/platform_device.h>11 12#include <drm/bridge/dw_hdmi.h>13#include <drm/drm_of.h>14#include <drm/drm_print.h>15 16static const struct dw_hdmi_mpll_config ingenic_mpll_cfg[] = {17 { 45250000, { { 0x01e0, 0x0000 }, { 0x21e1, 0x0000 }, { 0x41e2, 0x0000 } } },18 { 92500000, { { 0x0140, 0x0005 }, { 0x2141, 0x0005 }, { 0x4142, 0x0005 } } },19 { 148500000, { { 0x00a0, 0x000a }, { 0x20a1, 0x000a }, { 0x40a2, 0x000a } } },20 { 216000000, { { 0x00a0, 0x000a }, { 0x2001, 0x000f }, { 0x4002, 0x000f } } },21 { ~0UL, { { 0x0000, 0x0000 }, { 0x0000, 0x0000 }, { 0x0000, 0x0000 } } }22};23 24static const struct dw_hdmi_curr_ctrl ingenic_cur_ctr[] = {25 /*pixelclk bpp8 bpp10 bpp12 */26 { 54000000, { 0x091c, 0x091c, 0x06dc } },27 { 58400000, { 0x091c, 0x06dc, 0x06dc } },28 { 72000000, { 0x06dc, 0x06dc, 0x091c } },29 { 74250000, { 0x06dc, 0x0b5c, 0x091c } },30 { 118800000, { 0x091c, 0x091c, 0x06dc } },31 { 216000000, { 0x06dc, 0x0b5c, 0x091c } },32 { ~0UL, { 0x0000, 0x0000, 0x0000 } },33};34 35/*36 * Resistance term 133Ohm Cfg37 * PREEMP config 0.0038 * TX/CK level 1039 */40static const struct dw_hdmi_phy_config ingenic_phy_config[] = {41 /*pixelclk symbol term vlev */42 { 216000000, 0x800d, 0x0005, 0x01ad},43 { ~0UL, 0x0000, 0x0000, 0x0000}44};45 46static enum drm_mode_status47ingenic_dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,48 const struct drm_display_info *info,49 const struct drm_display_mode *mode)50{51 if (mode->clock < 13500)52 return MODE_CLOCK_LOW;53 /* FIXME: Hardware is capable of 270MHz, but setup data is missing. */54 if (mode->clock > 216000)55 return MODE_CLOCK_HIGH;56 57 return MODE_OK;58}59 60static struct dw_hdmi_plat_data ingenic_dw_hdmi_plat_data = {61 .mpll_cfg = ingenic_mpll_cfg,62 .cur_ctr = ingenic_cur_ctr,63 .phy_config = ingenic_phy_config,64 .mode_valid = ingenic_dw_hdmi_mode_valid,65 .output_port = 1,66};67 68static const struct of_device_id ingenic_dw_hdmi_dt_ids[] = {69 { .compatible = "ingenic,jz4780-dw-hdmi" },70 { /* Sentinel */ },71};72MODULE_DEVICE_TABLE(of, ingenic_dw_hdmi_dt_ids);73 74static void ingenic_dw_hdmi_cleanup(void *data)75{76 struct dw_hdmi *hdmi = (struct dw_hdmi *)data;77 78 dw_hdmi_remove(hdmi);79}80 81static int ingenic_dw_hdmi_probe(struct platform_device *pdev)82{83 struct dw_hdmi *hdmi;84 85 hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);86 if (IS_ERR(hdmi))87 return PTR_ERR(hdmi);88 89 return devm_add_action_or_reset(&pdev->dev, ingenic_dw_hdmi_cleanup, hdmi);90}91 92static struct platform_driver ingenic_dw_hdmi_driver = {93 .probe = ingenic_dw_hdmi_probe,94 .driver = {95 .name = "dw-hdmi-ingenic",96 .of_match_table = ingenic_dw_hdmi_dt_ids,97 },98};99module_platform_driver(ingenic_dw_hdmi_driver);100 101MODULE_DESCRIPTION("JZ4780 Specific DW-HDMI Driver Extension");102MODULE_LICENSE("GPL v2");103MODULE_ALIAS("platform:dw-hdmi-ingenic");104