xref: /openbmc/linux/include/drm/bridge/dw_mipi_dsi.h (revision e6486939)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) STMicroelectronics SA 2017
4  *
5  * Authors: Philippe Cornu <philippe.cornu@st.com>
6  *          Yannick Fertre <yannick.fertre@st.com>
7  */
8 
9 #ifndef __DW_MIPI_DSI__
10 #define __DW_MIPI_DSI__
11 
12 #include <linux/types.h>
13 
14 #include <drm/drm_modes.h>
15 
16 struct drm_display_mode;
17 struct drm_encoder;
18 struct dw_mipi_dsi;
19 struct mipi_dsi_device;
20 struct platform_device;
21 
22 struct dw_mipi_dsi_dphy_timing {
23 	u16 data_hs2lp;
24 	u16 data_lp2hs;
25 	u16 clk_hs2lp;
26 	u16 clk_lp2hs;
27 };
28 
29 struct dw_mipi_dsi_phy_ops {
30 	int (*init)(void *priv_data);
31 	void (*power_on)(void *priv_data);
32 	void (*power_off)(void *priv_data);
33 	int (*get_lane_mbps)(void *priv_data,
34 			     const struct drm_display_mode *mode,
35 			     unsigned long mode_flags, u32 lanes, u32 format,
36 			     unsigned int *lane_mbps);
37 	int (*get_timing)(void *priv_data, unsigned int lane_mbps,
38 			  struct dw_mipi_dsi_dphy_timing *timing);
39 	int (*get_esc_clk_rate)(void *priv_data, unsigned int *esc_clk_rate);
40 };
41 
42 struct dw_mipi_dsi_host_ops {
43 	int (*attach)(void *priv_data,
44 		      struct mipi_dsi_device *dsi);
45 	int (*detach)(void *priv_data,
46 		      struct mipi_dsi_device *dsi);
47 };
48 
49 struct dw_mipi_dsi_plat_data {
50 	void __iomem *base;
51 	unsigned int max_data_lanes;
52 
53 	enum drm_mode_status (*mode_valid)(void *priv_data,
54 					   const struct drm_display_mode *mode,
55 					   unsigned long mode_flags,
56 					   u32 lanes, u32 format);
57 
58 	const struct dw_mipi_dsi_phy_ops *phy_ops;
59 	const struct dw_mipi_dsi_host_ops *host_ops;
60 
61 	void *priv_data;
62 };
63 
64 struct dw_mipi_dsi *dw_mipi_dsi_probe(struct platform_device *pdev,
65 				      const struct dw_mipi_dsi_plat_data
66 				      *plat_data);
67 void dw_mipi_dsi_remove(struct dw_mipi_dsi *dsi);
68 int dw_mipi_dsi_bind(struct dw_mipi_dsi *dsi, struct drm_encoder *encoder);
69 void dw_mipi_dsi_unbind(struct dw_mipi_dsi *dsi);
70 void dw_mipi_dsi_set_slave(struct dw_mipi_dsi *dsi, struct dw_mipi_dsi *slave);
71 
72 #endif /* __DW_MIPI_DSI__ */
73