tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 num_clks;
57 unsigned int min_freq;
58 unsigned int max_freq;
59 unsigned int wait_for_reset;
60 unsigned int num_bits_resol;
61 unsigned int pll_p_offset;
62 const unsigned int *reg_values;
63 u16 m_min;
64 u16 m_max;
65};
66
67struct samsung_dsim_host_ops {
68 int (*register_host)(struct samsung_dsim *dsim);
69 void (*unregister_host)(struct samsung_dsim *dsim);
70 int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
71 void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
72 irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim);
73};
74
75struct samsung_dsim_plat_data {
76 enum samsung_dsim_type hw_type;
77 const struct samsung_dsim_host_ops *host_ops;
78};
79
80struct samsung_dsim {
81 struct mipi_dsi_host dsi_host;
82 struct drm_bridge bridge;
83 struct drm_bridge *out_bridge;
84 struct device *dev;
85 struct drm_display_mode mode;
86
87 void __iomem *reg_base;
88 struct phy *phy;
89 struct clk **clks;
90 struct regulator_bulk_data supplies[2];
91 int irq;
92 struct gpio_desc *te_gpio;
93
94 u32 pll_clk_rate;
95 u32 burst_clk_rate;
96 u32 hs_clock;
97 u32 esc_clk_rate;
98 u32 lanes;
99 u32 mode_flags;
100 u32 format;
101
102 bool swap_dn_dp_clk;
103 bool swap_dn_dp_data;
104 int state;
105 struct drm_property *brightness;
106 struct completion completed;
107
108 spinlock_t transfer_lock; /* protects transfer_list */
109 struct list_head transfer_list;
110
111 const struct samsung_dsim_driver_data *driver_data;
112 const struct samsung_dsim_plat_data *plat_data;
113
114 void *priv;
115};
116
117extern int samsung_dsim_probe(struct platform_device *pdev);
118extern int samsung_dsim_remove(struct platform_device *pdev);
119extern const struct dev_pm_ops samsung_dsim_pm_ops;
120
121#endif /* __SAMSUNG_DSIM__ */