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