1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (C) 2022 Amarula Solutions(India)
4 * Author: Jagan Teki <jagan@amarulasolutions.com>
5 */
6
7#ifndef __SAMSUNG_DSIM__
8#define __SAMSUNG_DSIM__
9
10#include <linux/gpio/consumer.h>
11#include <linux/regulator/consumer.h>
12
13#include <drm/drm_atomic_helper.h>
14#include <drm/drm_bridge.h>
15#include <drm/drm_mipi_dsi.h>
16#include <drm/drm_of.h>
17
18struct platform_device;
19struct samsung_dsim;
20
21#define DSIM_STATE_ENABLED BIT(0)
22#define DSIM_STATE_INITIALIZED BIT(1)
23#define DSIM_STATE_CMD_LPM BIT(2)
24#define DSIM_STATE_VIDOUT_AVAILABLE BIT(3)
25
26enum samsung_dsim_type {
27 DSIM_TYPE_EXYNOS3250,
28 DSIM_TYPE_EXYNOS4210,
29 DSIM_TYPE_EXYNOS5410,
30 DSIM_TYPE_EXYNOS5422,
31 DSIM_TYPE_EXYNOS5433,
32 DSIM_TYPE_EXYNOS7870,
33 DSIM_TYPE_IMX8MM,
34 DSIM_TYPE_IMX8MP,
35 DSIM_TYPE_COUNT,
36};
37
38#define samsung_dsim_hw_is_exynos(hw) \
39 ((hw) >= DSIM_TYPE_EXYNOS3250 && (hw) <= DSIM_TYPE_EXYNOS5433)
40
41struct samsung_dsim_transfer {
42 struct list_head list;
43 struct completion completed;
44 int result;
45 struct mipi_dsi_packet packet;
46 u16 flags;
47 u16 tx_done;
48
49 u8 *rx_payload;
50 u16 rx_len;
51 u16 rx_done;
52};
53
54struct samsung_dsim_driver_data {
55 const unsigned int *reg_ofs;
56 unsigned int plltmr_reg;
57 unsigned int has_legacy_status_reg:1;
58 unsigned int has_freqband:1;
59 unsigned int has_clklane_stop:1;
60 unsigned int has_broken_fifoctrl_emptyhdr:1;
61 unsigned int has_sfrctrl:1;
62 struct clk_bulk_data *clk_data;
63 unsigned int num_clks;
64 unsigned int min_freq;
65 unsigned int max_freq;
66 unsigned int wait_for_hdr_fifo;
67 unsigned int wait_for_reset;
68 unsigned int num_bits_resol;
69 unsigned int video_mode_bit;
70 unsigned int pll_stable_bit;
71 unsigned int esc_clken_bit;
72 unsigned int byte_clken_bit;
73 unsigned int tx_req_hsclk_bit;
74 unsigned int lane_esc_clk_bit;
75 unsigned int lane_esc_data_offset;
76 unsigned int pll_p_offset;
77 unsigned int pll_m_offset;
78 unsigned int pll_s_offset;
79 unsigned int main_vsa_offset;
80 const unsigned int *reg_values;
81 unsigned int pll_fin_min;
82 unsigned int pll_fin_max;
83 u16 m_min;
84 u16 m_max;
85};
86
87struct samsung_dsim_host_ops {
88 int (*register_host)(struct samsung_dsim *dsim);
89 void (*unregister_host)(struct samsung_dsim *dsim);
90 int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
91 void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
92 irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim);
93};
94
95struct samsung_dsim_plat_data {
96 enum samsung_dsim_type hw_type;
97 const struct samsung_dsim_host_ops *host_ops;
98};
99
100struct samsung_dsim {
101 struct mipi_dsi_host dsi_host;
102 struct drm_bridge bridge;
103 struct drm_bridge *out_bridge;
104 struct device *dev;
105 struct drm_display_mode mode;
106
107 void __iomem *reg_base;
108 struct phy *phy;
109 struct clk *pll_clk;
110 struct regulator_bulk_data supplies[2];
111 int irq;
112 struct gpio_desc *te_gpio;
113
114 u32 pll_clk_rate;
115 u32 burst_clk_rate;
116 u32 hs_clock;
117 u32 esc_clk_rate;
118 u32 lanes;
119 u32 mode_flags;
120 u32 format;
121
122 bool swap_dn_dp_clk;
123 bool swap_dn_dp_data;
124 int state;
125 struct drm_property *brightness;
126 struct completion completed;
127
128 spinlock_t transfer_lock; /* protects transfer_list */
129 struct list_head transfer_list;
130
131 const struct samsung_dsim_driver_data *driver_data;
132 const struct samsung_dsim_plat_data *plat_data;
133
134 void *priv;
135};
136
137extern int samsung_dsim_probe(struct platform_device *pdev);
138extern void samsung_dsim_remove(struct platform_device *pdev);
139extern const struct dev_pm_ops samsung_dsim_pm_ops;
140
141#endif /* __SAMSUNG_DSIM__ */
142

source code of linux/include/drm/bridge/samsung-dsim.h