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_of.h>
15#include <drm/drm_mipi_dsi.h>
16
17struct samsung_dsim;
18
19#define DSIM_STATE_ENABLED BIT(0)
20#define DSIM_STATE_INITIALIZED BIT(1)
21#define DSIM_STATE_CMD_LPM BIT(2)
22#define DSIM_STATE_VIDOUT_AVAILABLE BIT(3)
23
24enum samsung_dsim_type {
25 DSIM_TYPE_EXYNOS3250,
26 DSIM_TYPE_EXYNOS4210,
27 DSIM_TYPE_EXYNOS5410,
28 DSIM_TYPE_EXYNOS5422,
29 DSIM_TYPE_EXYNOS5433,
30 DSIM_TYPE_IMX8MM,
31 DSIM_TYPE_IMX8MP,
32 DSIM_TYPE_COUNT,
33};
34
35#define samsung_dsim_hw_is_exynos(hw) \
36 ((hw) >= DSIM_TYPE_EXYNOS3250 && (hw) <= DSIM_TYPE_EXYNOS5433)
37
38struct samsung_dsim_transfer {
39 struct list_head list;
40 struct completion completed;
41 int result;
42 struct mipi_dsi_packet packet;
43 u16 flags;
44 u16 tx_done;
45
46 u8 *rx_payload;
47 u16 rx_len;
48 u16 rx_done;
49};
50
51struct samsung_dsim_driver_data {
52 const unsigned int *reg_ofs;
53 unsigned int plltmr_reg;
54 unsigned int has_freqband:1;
55 unsigned int has_clklane_stop:1;
56 unsigned int has_broken_fifoctrl_emptyhdr:1;
57 unsigned int num_clks;
58 unsigned int min_freq;
59 unsigned int max_freq;
60 unsigned int wait_for_reset;
61 unsigned int num_bits_resol;
62 unsigned int pll_p_offset;
63 const unsigned int *reg_values;
64 unsigned int pll_fin_min;
65 unsigned int pll_fin_max;
66 u16 m_min;
67 u16 m_max;
68};
69
70struct samsung_dsim_host_ops {
71 int (*register_host)(struct samsung_dsim *dsim);
72 void (*unregister_host)(struct samsung_dsim *dsim);
73 int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
74 void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
75 irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim);
76};
77
78struct samsung_dsim_plat_data {
79 enum samsung_dsim_type hw_type;
80 const struct samsung_dsim_host_ops *host_ops;
81};
82
83struct samsung_dsim {
84 struct mipi_dsi_host dsi_host;
85 struct drm_bridge bridge;
86 struct drm_bridge *out_bridge;
87 struct device *dev;
88 struct drm_display_mode mode;
89
90 void __iomem *reg_base;
91 struct phy *phy;
92 struct clk **clks;
93 struct clk *pll_clk;
94 struct regulator_bulk_data supplies[2];
95 int irq;
96 struct gpio_desc *te_gpio;
97
98 u32 pll_clk_rate;
99 u32 burst_clk_rate;
100 u32 hs_clock;
101 u32 esc_clk_rate;
102 u32 lanes;
103 u32 mode_flags;
104 u32 format;
105
106 bool swap_dn_dp_clk;
107 bool swap_dn_dp_data;
108 int state;
109 struct drm_property *brightness;
110 struct completion completed;
111
112 spinlock_t transfer_lock; /* protects transfer_list */
113 struct list_head transfer_list;
114
115 const struct samsung_dsim_driver_data *driver_data;
116 const struct samsung_dsim_plat_data *plat_data;
117
118 void *priv;
119};
120
121extern int samsung_dsim_probe(struct platform_device *pdev);
122extern void samsung_dsim_remove(struct platform_device *pdev);
123extern const struct dev_pm_ops samsung_dsim_pm_ops;
124
125#endif /* __SAMSUNG_DSIM__ */
126

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