linux/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
 * Author: James.Qian.Wang <[email protected]>
 *
 */
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h>

#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_vblank.h>
#include <drm/drm_simple_kms_helper.h>
#include <drm/drm_bridge.h>

#include "komeda_dev.h"
#include "komeda_kms.h"

void komeda_crtc_get_color_config(struct drm_crtc_state *crtc_st,
				  u32 *color_depths, u32 *color_formats)
{ … }

static void komeda_crtc_update_clock_ratio(struct komeda_crtc_state *kcrtc_st)
{ … }

/**
 * komeda_crtc_atomic_check - build display output data flow
 * @crtc: DRM crtc
 * @state: the crtc state object
 *
 * crtc_atomic_check is the final check stage, so beside build a display data
 * pipeline according to the crtc_state, but still needs to release or disable
 * the unclaimed pipeline resources.
 *
 * RETURNS:
 * Zero for success or -errno
 */
static int
komeda_crtc_atomic_check(struct drm_crtc *crtc,
			 struct drm_atomic_state *state)
{ … }

/* For active a crtc, mainly need two parts of preparation
 * 1. adjust display operation mode.
 * 2. enable needed clk
 */
static int
komeda_crtc_prepare(struct komeda_crtc *kcrtc)
{ … }

static int
komeda_crtc_unprepare(struct komeda_crtc *kcrtc)
{ … }

void komeda_crtc_handle_event(struct komeda_crtc   *kcrtc,
			      struct komeda_events *evts)
{ … }

static void
komeda_crtc_do_flush(struct drm_crtc *crtc,
		     struct drm_crtc_state *old)
{ … }

static void
komeda_crtc_atomic_enable(struct drm_crtc *crtc,
			  struct drm_atomic_state *state)
{ … }

void
komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc,
					 struct completion *input_flip_done)
{ … }

static void
komeda_crtc_atomic_disable(struct drm_crtc *crtc,
			   struct drm_atomic_state *state)
{ … }

static void
komeda_crtc_atomic_flush(struct drm_crtc *crtc,
			 struct drm_atomic_state *state)
{ … }

/* Returns the minimum frequency of the aclk rate (main engine clock) in Hz */
static unsigned long
komeda_calc_min_aclk_rate(struct komeda_crtc *kcrtc,
			  unsigned long pxlclk)
{ … }

/* Get current aclk rate that specified by state */
unsigned long komeda_crtc_get_aclk(struct komeda_crtc_state *kcrtc_st)
{ … }

static enum drm_mode_status
komeda_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *m)
{ … }

static bool komeda_crtc_mode_fixup(struct drm_crtc *crtc,
				   const struct drm_display_mode *m,
				   struct drm_display_mode *adjusted_mode)
{ … }

static const struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = …;

static void komeda_crtc_reset(struct drm_crtc *crtc)
{ … }

static struct drm_crtc_state *
komeda_crtc_atomic_duplicate_state(struct drm_crtc *crtc)
{ … }

static void komeda_crtc_atomic_destroy_state(struct drm_crtc *crtc,
					     struct drm_crtc_state *state)
{ … }

static int komeda_crtc_vblank_enable(struct drm_crtc *crtc)
{ … }

static void komeda_crtc_vblank_disable(struct drm_crtc *crtc)
{ … }

static const struct drm_crtc_funcs komeda_crtc_funcs = …;

int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
			   struct komeda_dev *mdev)
{ … }

static struct drm_plane *
get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
{ … }

static int komeda_attach_bridge(struct device *dev,
				struct komeda_pipeline *pipe,
				struct drm_encoder *encoder)
{ … }

static int komeda_crtc_add(struct komeda_kms_dev *kms,
			   struct komeda_crtc *kcrtc)
{ … }

int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
{ … }