linux/drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi.c

// SPDX-License-Identifier: GPL-2.0
/*
 * RZ/G2L MIPI DSI Encoder Driver
 *
 * Copyright (C) 2022 Renesas Electronics Corporation
 */
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <linux/slab.h>

#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_probe_helper.h>

#include "rzg2l_mipi_dsi_regs.h"

struct rzg2l_mipi_dsi { … };

static inline struct rzg2l_mipi_dsi *
bridge_to_rzg2l_mipi_dsi(struct drm_bridge *bridge)
{ … }

static inline struct rzg2l_mipi_dsi *
host_to_rzg2l_mipi_dsi(struct mipi_dsi_host *host)
{ … }

struct rzg2l_mipi_dsi_timings { … };

static const struct rzg2l_mipi_dsi_timings rzg2l_mipi_dsi_global_timings[] = …;

static void rzg2l_mipi_dsi_phy_write(struct rzg2l_mipi_dsi *dsi, u32 reg, u32 data)
{ … }

static void rzg2l_mipi_dsi_link_write(struct rzg2l_mipi_dsi *dsi, u32 reg, u32 data)
{ … }

static u32 rzg2l_mipi_dsi_phy_read(struct rzg2l_mipi_dsi *dsi, u32 reg)
{ … }

static u32 rzg2l_mipi_dsi_link_read(struct rzg2l_mipi_dsi *dsi, u32 reg)
{ … }

/* -----------------------------------------------------------------------------
 * Hardware Setup
 */

static int rzg2l_mipi_dsi_dphy_init(struct rzg2l_mipi_dsi *dsi,
				    unsigned long hsfreq)
{ … }

static void rzg2l_mipi_dsi_dphy_exit(struct rzg2l_mipi_dsi *dsi)
{ … }

static int rzg2l_mipi_dsi_startup(struct rzg2l_mipi_dsi *dsi,
				  const struct drm_display_mode *mode)
{ … }

static void rzg2l_mipi_dsi_stop(struct rzg2l_mipi_dsi *dsi)
{ … }

static void rzg2l_mipi_dsi_set_display_timing(struct rzg2l_mipi_dsi *dsi,
					      const struct drm_display_mode *mode)
{ … }

static int rzg2l_mipi_dsi_start_hs_clock(struct rzg2l_mipi_dsi *dsi)
{ … }

static int rzg2l_mipi_dsi_stop_hs_clock(struct rzg2l_mipi_dsi *dsi)
{ … }

static int rzg2l_mipi_dsi_start_video(struct rzg2l_mipi_dsi *dsi)
{ … }

static int rzg2l_mipi_dsi_stop_video(struct rzg2l_mipi_dsi *dsi)
{ … }

/* -----------------------------------------------------------------------------
 * Bridge
 */

static int rzg2l_mipi_dsi_attach(struct drm_bridge *bridge,
				 enum drm_bridge_attach_flags flags)
{ … }

static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
					 struct drm_bridge_state *old_bridge_state)
{ … }

static void rzg2l_mipi_dsi_atomic_disable(struct drm_bridge *bridge,
					  struct drm_bridge_state *old_bridge_state)
{ … }

static enum drm_mode_status
rzg2l_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge,
				 const struct drm_display_info *info,
				 const struct drm_display_mode *mode)
{ … }

static const struct drm_bridge_funcs rzg2l_mipi_dsi_bridge_ops = …;

/* -----------------------------------------------------------------------------
 * Host setting
 */

static int rzg2l_mipi_dsi_host_attach(struct mipi_dsi_host *host,
				      struct mipi_dsi_device *device)
{ … }

static int rzg2l_mipi_dsi_host_detach(struct mipi_dsi_host *host,
				      struct mipi_dsi_device *device)
{ … }

static const struct mipi_dsi_host_ops rzg2l_mipi_dsi_host_ops = …;

/* -----------------------------------------------------------------------------
 * Power Management
 */

static int __maybe_unused rzg2l_mipi_pm_runtime_suspend(struct device *dev)
{ … }

static int __maybe_unused rzg2l_mipi_pm_runtime_resume(struct device *dev)
{ … }

static const struct dev_pm_ops rzg2l_mipi_pm_ops = …;

/* -----------------------------------------------------------------------------
 * Probe & Remove
 */

static int rzg2l_mipi_dsi_probe(struct platform_device *pdev)
{ … }

static void rzg2l_mipi_dsi_remove(struct platform_device *pdev)
{ … }

static const struct of_device_id rzg2l_mipi_dsi_of_table[] = …;

MODULE_DEVICE_TABLE(of, rzg2l_mipi_dsi_of_table);

static struct platform_driver rzg2l_mipi_dsi_platform_driver = …;

module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;