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 | |
17 | struct 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 | |
24 | enum 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 | |
38 | struct 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 | |
51 | struct 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 | |
70 | struct 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 | |
78 | struct samsung_dsim_plat_data { |
79 | enum samsung_dsim_type hw_type; |
80 | const struct samsung_dsim_host_ops *host_ops; |
81 | }; |
82 | |
83 | struct 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 | |
121 | extern int samsung_dsim_probe(struct platform_device *pdev); |
122 | extern void samsung_dsim_remove(struct platform_device *pdev); |
123 | extern const struct dev_pm_ops samsung_dsim_pm_ops; |
124 | |
125 | #endif /* __SAMSUNG_DSIM__ */ |
126 | |