1/*
  2 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License version 2 and
  6 * only version 2 as published by the Free Software Foundation.
  7 *
  8 * This program is distributed in the hope that it will be useful,
  9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 11 * GNU General Public License for more details.
 12 */
 13
 14#ifndef __DSI_CONNECTOR_H__
 15#define __DSI_CONNECTOR_H__
 16
 17#include <linux/of_platform.h>
 18#include <linux/platform_device.h>
 19
 20#include "drm_crtc.h"
 21#include "drm_mipi_dsi.h"
 22#include "drm_panel.h"
 23
 24#include "msm_drv.h"
 25
 26#define DSI_0	0
 27#define DSI_1	1
 28#define DSI_MAX	2
 29
 30enum msm_dsi_phy_type {
 31	MSM_DSI_PHY_28NM_HPM,
 32	MSM_DSI_PHY_28NM_LP,
 33	MSM_DSI_PHY_20NM,
 34	MSM_DSI_PHY_28NM_8960,
 35	MSM_DSI_PHY_MAX
 36};
 37
 38#define DSI_DEV_REGULATOR_MAX	8
 39#define DSI_BUS_CLK_MAX		4
 40
 41/* Regulators for DSI devices */
 42struct dsi_reg_entry {
 43	char name[32];
 44	int min_voltage;
 45	int max_voltage;
 46	int enable_load;
 47	int disable_load;
 48};
 49
 50struct dsi_reg_config {
 51	int num;
 52	struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX];
 53};
 54
 55struct msm_dsi {
 56	struct drm_device *dev;
 57	struct platform_device *pdev;
 58
 59	/* connector managed by us when we're connected to a drm_panel */
 60	struct drm_connector *connector;
 61	/* internal dsi bridge attached to MDP interface */
 62	struct drm_bridge *bridge;
 63
 64	struct mipi_dsi_host *host;
 65	struct msm_dsi_phy *phy;
 66
 67	/*
 68	 * panel/external_bridge connected to dsi bridge output, only one of the
 69	 * two can be valid at a time
 70	 */
 71	struct drm_panel *panel;
 72	struct drm_bridge *external_bridge;
 73	unsigned long device_flags;
 74
 75	struct device *phy_dev;
 76	bool phy_enabled;
 77
 78	/* the encoders we are hooked to (outside of dsi block) */
 79	struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM];
 80
 81	int id;
 82};
 83
 84/* dsi manager */
 85struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
 86void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
 87struct drm_connector *msm_dsi_manager_connector_init(u8 id);
 88struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id);
 89int msm_dsi_manager_phy_enable(int id,
 90		const unsigned long bit_rate, const unsigned long esc_rate,
 91		u32 *clk_pre, u32 *clk_post);
 92void msm_dsi_manager_phy_disable(int id);
 93int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
 94bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
 95int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
 96void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
 97
 98/* msm dsi */
 99static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
100{
101	return msm_dsi->panel || msm_dsi->external_bridge;
102}
103
104struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
105
106/* dsi pll */
107struct msm_dsi_pll;
108#ifdef CONFIG_DRM_MSM_DSI_PLL
109struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
110			enum msm_dsi_phy_type type, int dsi_id);
111void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
112int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
113	struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
114void msm_dsi_pll_save_state(struct msm_dsi_pll *pll);
115int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll);
116#else
117static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
118			 enum msm_dsi_phy_type type, int id) {
119	return ERR_PTR(-ENODEV);
120}
121static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
122{
123}
124static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
125	struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
126{
127	return -ENODEV;
128}
129static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll)
130{
131}
132static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll)
133{
134	return 0;
135}
136#endif
137
138/* dsi host */
139int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
140					const struct mipi_dsi_msg *msg);
141void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
142					const struct mipi_dsi_msg *msg);
143int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
144					const struct mipi_dsi_msg *msg);
145int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
146					const struct mipi_dsi_msg *msg);
147void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
148					u32 dma_base, u32 len);
149int msm_dsi_host_enable(struct mipi_dsi_host *host);
150int msm_dsi_host_disable(struct mipi_dsi_host *host);
151int msm_dsi_host_power_on(struct mipi_dsi_host *host);
152int msm_dsi_host_power_off(struct mipi_dsi_host *host);
153int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
154					struct drm_display_mode *mode);
155struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
156					unsigned long *panel_flags);
157struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
158int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
159void msm_dsi_host_unregister(struct mipi_dsi_host *host);
160int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
161			struct msm_dsi_pll *src_pll);
162void msm_dsi_host_destroy(struct mipi_dsi_host *host);
163int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
164					struct drm_device *dev);
165int msm_dsi_host_init(struct msm_dsi *msm_dsi);
166
167/* dsi phy */
168struct msm_dsi_phy;
169void msm_dsi_phy_driver_register(void);
170void msm_dsi_phy_driver_unregister(void);
171int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
172	const unsigned long bit_rate, const unsigned long esc_rate);
173void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
174void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy,
175					u32 *clk_pre, u32 *clk_post);
176struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
177
178#endif /* __DSI_CONNECTOR_H__ */
179