samsung-dsim.h

  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__ */