tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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/drm_crtc.h>
21#include <drm/drm_mipi_dsi.h>
22#include <drm/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
30struct msm_dsi_phy_shared_timings;
31struct msm_dsi_phy_clk_request;
32
33enum msm_dsi_phy_type {
34 MSM_DSI_PHY_28NM_HPM,
35 MSM_DSI_PHY_28NM_LP,
36 MSM_DSI_PHY_20NM,
37 MSM_DSI_PHY_28NM_8960,
38 MSM_DSI_PHY_14NM,
39 MSM_DSI_PHY_MAX
40};
41
42enum msm_dsi_phy_usecase {
43 MSM_DSI_PHY_STANDALONE,
44 MSM_DSI_PHY_MASTER,
45 MSM_DSI_PHY_SLAVE,
46};
47
48#define DSI_DEV_REGULATOR_MAX 8
49#define DSI_BUS_CLK_MAX 4
50
51/* Regulators for DSI devices */
52struct dsi_reg_entry {
53 char name[32];
54 int enable_load;
55 int disable_load;
56};
57
58struct dsi_reg_config {
59 int num;
60 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX];
61};
62
63struct msm_dsi {
64 struct drm_device *dev;
65 struct platform_device *pdev;
66
67 /* connector managed by us when we're connected to a drm_panel */
68 struct drm_connector *connector;
69 /* internal dsi bridge attached to MDP interface */
70 struct drm_bridge *bridge;
71
72 struct mipi_dsi_host *host;
73 struct msm_dsi_phy *phy;
74
75 /*
76 * panel/external_bridge connected to dsi bridge output, only one of the
77 * two can be valid at a time
78 */
79 struct drm_panel *panel;
80 struct drm_bridge *external_bridge;
81 unsigned long device_flags;
82
83 struct device *phy_dev;
84 bool phy_enabled;
85
86 /* the encoder we are hooked to (outside of dsi block) */
87 struct drm_encoder *encoder;
88
89 int id;
90};
91
92/* dsi manager */
93struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
94void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
95struct drm_connector *msm_dsi_manager_connector_init(u8 id);
96struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id);
97int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
98bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
99void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags);
100int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
101void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
102
103/* msm dsi */
104static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
105{
106 return msm_dsi->panel || msm_dsi->external_bridge;
107}
108
109struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
110
111/* dsi pll */
112struct msm_dsi_pll;
113#ifdef CONFIG_DRM_MSM_DSI_PLL
114struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
115 enum msm_dsi_phy_type type, int dsi_id);
116void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
117int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
118 struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
119void msm_dsi_pll_save_state(struct msm_dsi_pll *pll);
120int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll);
121int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
122 enum msm_dsi_phy_usecase uc);
123#else
124static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
125 enum msm_dsi_phy_type type, int id) {
126 return ERR_PTR(-ENODEV);
127}
128static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
129{
130}
131static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
132 struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
133{
134 return -ENODEV;
135}
136static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll)
137{
138}
139static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll)
140{
141 return 0;
142}
143static inline int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
144 enum msm_dsi_phy_usecase uc)
145{
146 return -ENODEV;
147}
148#endif
149
150/* dsi host */
151int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
152 const struct mipi_dsi_msg *msg);
153void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
154 const struct mipi_dsi_msg *msg);
155int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
156 const struct mipi_dsi_msg *msg);
157int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
158 const struct mipi_dsi_msg *msg);
159void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
160 u32 dma_base, u32 len);
161int msm_dsi_host_enable(struct mipi_dsi_host *host);
162int msm_dsi_host_disable(struct mipi_dsi_host *host);
163int msm_dsi_host_power_on(struct mipi_dsi_host *host,
164 struct msm_dsi_phy_shared_timings *phy_shared_timings);
165int msm_dsi_host_power_off(struct mipi_dsi_host *host);
166int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
167 struct drm_display_mode *mode);
168struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
169 unsigned long *panel_flags);
170struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
171int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
172void msm_dsi_host_unregister(struct mipi_dsi_host *host);
173int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
174 struct msm_dsi_pll *src_pll);
175void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
176void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
177 struct msm_dsi_phy_clk_request *clk_req);
178void msm_dsi_host_destroy(struct mipi_dsi_host *host);
179int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
180 struct drm_device *dev);
181int msm_dsi_host_init(struct msm_dsi *msm_dsi);
182
183/* dsi phy */
184struct msm_dsi_phy;
185struct msm_dsi_phy_shared_timings {
186 u32 clk_post;
187 u32 clk_pre;
188 bool clk_pre_inc_by_2;
189};
190
191struct msm_dsi_phy_clk_request {
192 unsigned long bitclk_rate;
193 unsigned long escclk_rate;
194};
195
196void msm_dsi_phy_driver_register(void);
197void msm_dsi_phy_driver_unregister(void);
198int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
199 struct msm_dsi_phy_clk_request *clk_req);
200void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
201void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy,
202 struct msm_dsi_phy_shared_timings *shared_timing);
203struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
204void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
205 enum msm_dsi_phy_usecase uc);
206
207#endif /* __DSI_CONNECTOR_H__ */
208