1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
  4 */
  5
  6#ifndef __DSI_CONNECTOR_H__
  7#define __DSI_CONNECTOR_H__
  8
  9#include <linux/of_platform.h>
 10#include <linux/platform_device.h>
 11
 12#include <drm/drm_bridge.h>
 13#include <drm/drm_crtc.h>
 14#include <drm/drm_mipi_dsi.h>
 15#include <drm/drm_panel.h>
 16
 17#include "msm_drv.h"
 18#include "disp/msm_disp_snapshot.h"
 19
 20#define DSI_0	0
 21#define DSI_1	1
 22#define DSI_MAX	2
 23
 24struct msm_dsi_phy_shared_timings;
 25struct msm_dsi_phy_clk_request;
 26
 27enum msm_dsi_phy_usecase {
 28	MSM_DSI_PHY_STANDALONE,
 29	MSM_DSI_PHY_MASTER,
 30	MSM_DSI_PHY_SLAVE,
 31};
 32
 33#define DSI_DEV_REGULATOR_MAX	8
 34#define DSI_BUS_CLK_MAX		4
 35
 36/* Regulators for DSI devices */
 37struct dsi_reg_entry {
 38	char name[32];
 39	int enable_load;
 40	int disable_load;
 41};
 42
 43struct dsi_reg_config {
 44	int num;
 45	struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX];
 46};
 47
 48struct msm_dsi {
 49	struct drm_device *dev;
 50	struct platform_device *pdev;
 51
 52	/* connector managed by us when we're connected to a drm_panel */
 53	struct drm_connector *connector;
 54	/* internal dsi bridge attached to MDP interface */
 55	struct drm_bridge *bridge;
 56
 57	struct mipi_dsi_host *host;
 58	struct msm_dsi_phy *phy;
 59
 60	/*
 61	 * panel/external_bridge connected to dsi bridge output, only one of the
 62	 * two can be valid at a time
 63	 */
 64	struct drm_panel *panel;
 65	struct drm_bridge *external_bridge;
 66
 67	struct device *phy_dev;
 68	bool phy_enabled;
 69
 70	/* the encoder we are hooked to (outside of dsi block) */
 71	struct drm_encoder *encoder;
 72
 73	int id;
 74};
 75
 76/* dsi manager */
 77struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
 78void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
 79struct drm_connector *msm_dsi_manager_connector_init(u8 id);
 80struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id);
 81int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
 82bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
 83void msm_dsi_manager_setup_encoder(int id);
 84int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
 85void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
 86bool msm_dsi_manager_validate_current_config(u8 id);
 87
 88/* msm dsi */
 89static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
 90{
 91	return msm_dsi->panel || msm_dsi->external_bridge;
 92}
 93
 94struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
 95
 96/* dsi host */
 97struct msm_dsi_host;
 98int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
 99					const struct mipi_dsi_msg *msg);
100void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
101					const struct mipi_dsi_msg *msg);
102int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
103					const struct mipi_dsi_msg *msg);
104int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
105					const struct mipi_dsi_msg *msg);
106void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
107					u32 dma_base, u32 len);
108int msm_dsi_host_enable(struct mipi_dsi_host *host);
109int msm_dsi_host_disable(struct mipi_dsi_host *host);
110int msm_dsi_host_power_on(struct mipi_dsi_host *host,
111			struct msm_dsi_phy_shared_timings *phy_shared_timings,
112			bool is_dual_dsi);
113int msm_dsi_host_power_off(struct mipi_dsi_host *host);
114int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
115				  const struct drm_display_mode *mode);
116struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host);
117unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host);
118struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
119int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
120void msm_dsi_host_unregister(struct mipi_dsi_host *host);
121int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
122			struct msm_dsi_phy *src_phy);
123void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
124void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
125	struct msm_dsi_phy_clk_request *clk_req,
126	bool is_dual_dsi);
127void msm_dsi_host_destroy(struct mipi_dsi_host *host);
128int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
129					struct drm_device *dev);
130int msm_dsi_host_init(struct msm_dsi *msm_dsi);
131int msm_dsi_runtime_suspend(struct device *dev);
132int msm_dsi_runtime_resume(struct device *dev);
133int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host);
134int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host);
135int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host);
136int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host);
137void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host);
138void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host);
139int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size);
140int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size);
141void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host);
142void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host);
143void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host);
144int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova);
145int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova);
146int dsi_clk_init_v2(struct msm_dsi_host *msm_host);
147int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);
148int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi);
149int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi);
150void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host);
151/* dsi phy */
152struct msm_dsi_phy;
153struct msm_dsi_phy_shared_timings {
154	u32 clk_post;
155	u32 clk_pre;
156	bool clk_pre_inc_by_2;
157};
158
159struct msm_dsi_phy_clk_request {
160	unsigned long bitclk_rate;
161	unsigned long escclk_rate;
162};
163
164void msm_dsi_phy_driver_register(void);
165void msm_dsi_phy_driver_unregister(void);
166int msm_dsi_phy_enable(struct msm_dsi_phy *phy,
167			struct msm_dsi_phy_clk_request *clk_req);
168void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
169void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy,
170			struct msm_dsi_phy_shared_timings *shared_timing);
171void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
172			     enum msm_dsi_phy_usecase uc);
173int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy,
174	struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
175void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy);
176int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy);
177void msm_dsi_phy_snapshot(struct msm_disp_state *disp_state, struct msm_dsi_phy *phy);
178
179#endif /* __DSI_CONNECTOR_H__ */
180