tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
30#define DSI_CLOCK_MASTER DSI_0
31#define DSI_CLOCK_SLAVE DSI_1
32
33#define DSI_LEFT DSI_0
34#define DSI_RIGHT DSI_1
35
36/* According to the current drm framework sequence, take the encoder of
37 * DSI_1 as master encoder
38 */
39#define DSI_ENCODER_MASTER DSI_1
40#define DSI_ENCODER_SLAVE DSI_0
41
42enum msm_dsi_phy_type {
43 MSM_DSI_PHY_28NM_HPM,
44 MSM_DSI_PHY_28NM_LP,
45 MSM_DSI_PHY_MAX
46};
47
48#define DSI_DEV_REGULATOR_MAX 8
49
50/* Regulators for DSI devices */
51struct dsi_reg_entry {
52 char name[32];
53 int min_voltage;
54 int max_voltage;
55 int enable_load;
56 int disable_load;
57};
58
59struct dsi_reg_config {
60 int num;
61 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX];
62};
63
64struct msm_dsi {
65 struct drm_device *dev;
66 struct platform_device *pdev;
67
68 struct drm_connector *connector;
69 struct drm_bridge *bridge;
70
71 struct mipi_dsi_host *host;
72 struct msm_dsi_phy *phy;
73 struct drm_panel *panel;
74 unsigned long panel_flags;
75
76 struct device *phy_dev;
77 bool phy_enabled;
78
79 /* the encoders we are hooked to (outside of dsi block) */
80 struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM];
81
82 int id;
83};
84
85/* dsi manager */
86struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
87void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
88struct drm_connector *msm_dsi_manager_connector_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 iova, 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 */
99struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
100
101/* dsi pll */
102struct msm_dsi_pll;
103#ifdef CONFIG_DRM_MSM_DSI_PLL
104struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
105 enum msm_dsi_phy_type type, int dsi_id);
106void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
107int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
108 struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
109#else
110static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
111 enum msm_dsi_phy_type type, int id) {
112 return ERR_PTR(-ENODEV);
113}
114static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
115{
116}
117static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
118 struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
119{
120 return -ENODEV;
121}
122#endif
123
124/* dsi host */
125int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
126 const struct mipi_dsi_msg *msg);
127void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
128 const struct mipi_dsi_msg *msg);
129int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
130 const struct mipi_dsi_msg *msg);
131int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
132 const struct mipi_dsi_msg *msg);
133void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
134 u32 iova, u32 len);
135int msm_dsi_host_enable(struct mipi_dsi_host *host);
136int msm_dsi_host_disable(struct mipi_dsi_host *host);
137int msm_dsi_host_power_on(struct mipi_dsi_host *host);
138int msm_dsi_host_power_off(struct mipi_dsi_host *host);
139int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
140 struct drm_display_mode *mode);
141struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
142 unsigned long *panel_flags);
143int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
144void msm_dsi_host_unregister(struct mipi_dsi_host *host);
145int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
146 struct msm_dsi_pll *src_pll);
147void msm_dsi_host_destroy(struct mipi_dsi_host *host);
148int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
149 struct drm_device *dev);
150int msm_dsi_host_init(struct msm_dsi *msm_dsi);
151
152/* dsi phy */
153struct msm_dsi_phy;
154void msm_dsi_phy_driver_register(void);
155void msm_dsi_phy_driver_unregister(void);
156int msm_dsi_phy_enable(struct msm_dsi_phy *phy, bool is_dual_panel,
157 const unsigned long bit_rate, const unsigned long esc_rate);
158int msm_dsi_phy_disable(struct msm_dsi_phy *phy);
159void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy,
160 u32 *clk_pre, u32 *clk_post);
161struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
162
163#endif /* __DSI_CONNECTOR_H__ */
164