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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 enable_load;
45 int disable_load;
46};
47
48struct dsi_reg_config {
49 int num;
50 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX];
51};
52
53struct msm_dsi {
54 struct drm_device *dev;
55 struct platform_device *pdev;
56
57 /* connector managed by us when we're connected to a drm_panel */
58 struct drm_connector *connector;
59 /* internal dsi bridge attached to MDP interface */
60 struct drm_bridge *bridge;
61
62 struct mipi_dsi_host *host;
63 struct msm_dsi_phy *phy;
64
65 /*
66 * panel/external_bridge connected to dsi bridge output, only one of the
67 * two can be valid at a time
68 */
69 struct drm_panel *panel;
70 struct drm_bridge *external_bridge;
71 unsigned long device_flags;
72
73 struct device *phy_dev;
74 bool phy_enabled;
75
76 /* the encoders we are hooked to (outside of dsi block) */
77 struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM];
78
79 int id;
80};
81
82/* dsi manager */
83struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
84void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
85struct drm_connector *msm_dsi_manager_connector_init(u8 id);
86struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id);
87int msm_dsi_manager_phy_enable(int id,
88 const unsigned long bit_rate, const unsigned long esc_rate,
89 u32 *clk_pre, u32 *clk_post);
90void msm_dsi_manager_phy_disable(int id);
91int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
92bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
93int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
94void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
95
96/* msm dsi */
97static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
98{
99 return msm_dsi->panel || msm_dsi->external_bridge;
100}
101
102struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
103
104/* dsi pll */
105struct msm_dsi_pll;
106#ifdef CONFIG_DRM_MSM_DSI_PLL
107struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
108 enum msm_dsi_phy_type type, int dsi_id);
109void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
110int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
111 struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
112void msm_dsi_pll_save_state(struct msm_dsi_pll *pll);
113int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll);
114#else
115static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
116 enum msm_dsi_phy_type type, int id) {
117 return ERR_PTR(-ENODEV);
118}
119static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
120{
121}
122static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
123 struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
124{
125 return -ENODEV;
126}
127static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll)
128{
129}
130static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll)
131{
132 return 0;
133}
134#endif
135
136/* dsi host */
137int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
138 const struct mipi_dsi_msg *msg);
139void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
140 const struct mipi_dsi_msg *msg);
141int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
142 const struct mipi_dsi_msg *msg);
143int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
144 const struct mipi_dsi_msg *msg);
145void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
146 u32 dma_base, u32 len);
147int msm_dsi_host_enable(struct mipi_dsi_host *host);
148int msm_dsi_host_disable(struct mipi_dsi_host *host);
149int msm_dsi_host_power_on(struct mipi_dsi_host *host);
150int msm_dsi_host_power_off(struct mipi_dsi_host *host);
151int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
152 struct drm_display_mode *mode);
153struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
154 unsigned long *panel_flags);
155struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
156int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
157void msm_dsi_host_unregister(struct mipi_dsi_host *host);
158int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
159 struct msm_dsi_pll *src_pll);
160void msm_dsi_host_destroy(struct mipi_dsi_host *host);
161int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
162 struct drm_device *dev);
163int msm_dsi_host_init(struct msm_dsi *msm_dsi);
164
165/* dsi phy */
166struct msm_dsi_phy;
167void msm_dsi_phy_driver_register(void);
168void msm_dsi_phy_driver_unregister(void);
169int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
170 const unsigned long bit_rate, const unsigned long esc_rate);
171void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
172void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy,
173 u32 *clk_pre, u32 *clk_post);
174struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
175
176#endif /* __DSI_CONNECTOR_H__ */
177