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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Samsung MIPI DSIM glue for Exynos SoCs.4 *5 * Copyright (c) 2014 Samsung Electronics Co., Ltd6 *7 * Contacts: Tomasz Figa <t.figa@samsung.com>8 */9 10#include <linux/component.h>11#include <linux/of.h>12#include <linux/platform_device.h>13 14#include <drm/bridge/samsung-dsim.h>15#include <drm/drm_probe_helper.h>16#include <drm/drm_simple_kms_helper.h>17 18#include "exynos_drm_crtc.h"19#include "exynos_drm_drv.h"20 21struct exynos_dsi {22 struct drm_encoder encoder;23};24 25static irqreturn_t exynos_dsi_te_irq_handler(struct samsung_dsim *dsim)26{27 struct exynos_dsi *dsi = dsim->priv;28 struct drm_encoder *encoder = &dsi->encoder;29 30 if (dsim->state & DSIM_STATE_VIDOUT_AVAILABLE)31 exynos_drm_crtc_te_handler(encoder->crtc);32 33 return IRQ_HANDLED;34}35 36static int exynos_dsi_host_attach(struct samsung_dsim *dsim,37 struct mipi_dsi_device *device)38{39 struct exynos_dsi *dsi = dsim->priv;40 struct drm_encoder *encoder = &dsi->encoder;41 struct drm_device *drm = encoder->dev;42 43 drm_bridge_attach(encoder, &dsim->bridge,44 list_first_entry_or_null(&encoder->bridge_chain,45 struct drm_bridge,46 chain_node), 0);47 48 mutex_lock(&drm->mode_config.mutex);49 50 dsim->lanes = device->lanes;51 dsim->format = device->format;52 dsim->mode_flags = device->mode_flags;53 exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode =54 !(dsim->mode_flags & MIPI_DSI_MODE_VIDEO);55 56 mutex_unlock(&drm->mode_config.mutex);57 58 if (drm->mode_config.poll_enabled)59 drm_kms_helper_hotplug_event(drm);60 61 return 0;62}63 64static void exynos_dsi_host_detach(struct samsung_dsim *dsim,65 struct mipi_dsi_device *device)66{67 struct exynos_dsi *dsi = dsim->priv;68 struct drm_device *drm = dsi->encoder.dev;69 70 if (drm->mode_config.poll_enabled)71 drm_kms_helper_hotplug_event(drm);72}73 74static int exynos_dsi_bind(struct device *dev, struct device *master, void *data)75{76 struct samsung_dsim *dsim = dev_get_drvdata(dev);77 struct exynos_dsi *dsi = dsim->priv;78 struct drm_encoder *encoder = &dsi->encoder;79 struct drm_device *drm_dev = data;80 int ret;81 82 drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);83 84 ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);85 if (ret < 0)86 return ret;87 88 return mipi_dsi_host_register(&dsim->dsi_host);89}90 91static void exynos_dsi_unbind(struct device *dev, struct device *master, void *data)92{93 struct samsung_dsim *dsim = dev_get_drvdata(dev);94 95 dsim->bridge.funcs->atomic_disable(&dsim->bridge, NULL);96 97 mipi_dsi_host_unregister(&dsim->dsi_host);98}99 100static const struct component_ops exynos_dsi_component_ops = {101 .bind = exynos_dsi_bind,102 .unbind = exynos_dsi_unbind,103};104 105static int exynos_dsi_register_host(struct samsung_dsim *dsim)106{107 struct exynos_dsi *dsi;108 109 dsi = devm_kzalloc(dsim->dev, sizeof(*dsi), GFP_KERNEL);110 if (!dsi)111 return -ENOMEM;112 113 dsim->priv = dsi;114 dsim->bridge.pre_enable_prev_first = true;115 116 return component_add(dsim->dev, &exynos_dsi_component_ops);117}118 119static void exynos_dsi_unregister_host(struct samsung_dsim *dsim)120{121 component_del(dsim->dev, &exynos_dsi_component_ops);122}123 124static const struct samsung_dsim_host_ops exynos_dsi_exynos_host_ops = {125 .register_host = exynos_dsi_register_host,126 .unregister_host = exynos_dsi_unregister_host,127 .attach = exynos_dsi_host_attach,128 .detach = exynos_dsi_host_detach,129 .te_irq_handler = exynos_dsi_te_irq_handler,130};131 132static const struct samsung_dsim_plat_data exynos3250_dsi_pdata = {133 .hw_type = DSIM_TYPE_EXYNOS3250,134 .host_ops = &exynos_dsi_exynos_host_ops,135};136 137static const struct samsung_dsim_plat_data exynos4210_dsi_pdata = {138 .hw_type = DSIM_TYPE_EXYNOS4210,139 .host_ops = &exynos_dsi_exynos_host_ops,140};141 142static const struct samsung_dsim_plat_data exynos5410_dsi_pdata = {143 .hw_type = DSIM_TYPE_EXYNOS5410,144 .host_ops = &exynos_dsi_exynos_host_ops,145};146 147static const struct samsung_dsim_plat_data exynos5422_dsi_pdata = {148 .hw_type = DSIM_TYPE_EXYNOS5422,149 .host_ops = &exynos_dsi_exynos_host_ops,150};151 152static const struct samsung_dsim_plat_data exynos5433_dsi_pdata = {153 .hw_type = DSIM_TYPE_EXYNOS5433,154 .host_ops = &exynos_dsi_exynos_host_ops,155};156 157static const struct of_device_id exynos_dsi_of_match[] = {158 {159 .compatible = "samsung,exynos3250-mipi-dsi",160 .data = &exynos3250_dsi_pdata,161 },162 {163 .compatible = "samsung,exynos4210-mipi-dsi",164 .data = &exynos4210_dsi_pdata,165 },166 {167 .compatible = "samsung,exynos5410-mipi-dsi",168 .data = &exynos5410_dsi_pdata,169 },170 {171 .compatible = "samsung,exynos5422-mipi-dsi",172 .data = &exynos5422_dsi_pdata,173 },174 {175 .compatible = "samsung,exynos5433-mipi-dsi",176 .data = &exynos5433_dsi_pdata,177 },178 { /* sentinel. */ }179};180MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);181 182struct platform_driver dsi_driver = {183 .probe = samsung_dsim_probe,184 .remove_new = samsung_dsim_remove,185 .driver = {186 .name = "exynos-dsi",187 .pm = &samsung_dsim_pm_ops,188 .of_match_table = exynos_dsi_of_match,189 },190};191 192MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>");193MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");194MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");195MODULE_LICENSE("GPL v2");196