linux/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
 */

#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <dt-bindings/phy/phy.h>

#include "dsi_phy.h"

#define S_DIV_ROUND_UP(n, d) …

static inline s32 linear_inter(s32 tmax, s32 tmin, s32 percent,
				s32 min_result, bool even)
{ … }

static void dsi_dphy_timing_calc_clk_zero(struct msm_dsi_dphy_timing *timing,
					s32 ui, s32 coeff, s32 pcnt)
{ … }

int msm_dsi_dphy_timing_calc(struct msm_dsi_dphy_timing *timing,
			     struct msm_dsi_phy_clk_request *clk_req)
{ … }

int msm_dsi_dphy_timing_calc_v2(struct msm_dsi_dphy_timing *timing,
				struct msm_dsi_phy_clk_request *clk_req)
{ … }

int msm_dsi_dphy_timing_calc_v3(struct msm_dsi_dphy_timing *timing,
	struct msm_dsi_phy_clk_request *clk_req)
{ … }

int msm_dsi_dphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
	struct msm_dsi_phy_clk_request *clk_req)
{ … }

int msm_dsi_cphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
	struct msm_dsi_phy_clk_request *clk_req)
{ … }

static int dsi_phy_enable_resource(struct msm_dsi_phy *phy)
{ … }

static void dsi_phy_disable_resource(struct msm_dsi_phy *phy)
{ … }

static const struct of_device_id dsi_phy_dt_match[] = …;

/*
 * Currently, we only support one SoC for each PHY type. When we have multiple
 * SoCs for the same PHY, we can try to make the index searching a bit more
 * clever.
 */
static int dsi_phy_get_id(struct msm_dsi_phy *phy)
{ … }

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

static struct platform_driver dsi_phy_platform_driver = …;

void __init msm_dsi_phy_driver_register(void)
{ … }

void __exit msm_dsi_phy_driver_unregister(void)
{ … }

int msm_dsi_phy_enable(struct msm_dsi_phy *phy,
			struct msm_dsi_phy_clk_request *clk_req,
			struct msm_dsi_phy_shared_timings *shared_timings)
{ … }

void msm_dsi_phy_disable(struct msm_dsi_phy *phy)
{ … }

void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
			     enum msm_dsi_phy_usecase uc)
{ … }

/* Returns true if we have to clear DSI_LANE_CTRL.HS_REQ_SEL_PHY */
bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable)
{ … }

void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy)
{ … }

int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy)
{ … }

void msm_dsi_phy_snapshot(struct msm_disp_state *disp_state, struct msm_dsi_phy *phy)
{ … }