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_IMX8MM,
 33	DSIM_TYPE_IMX8MP,
 34	DSIM_TYPE_COUNT,
 35};
 36
 37#define samsung_dsim_hw_is_exynos(hw) \
 38	((hw) >= DSIM_TYPE_EXYNOS3250 && (hw) <= DSIM_TYPE_EXYNOS5433)
 39
 40struct samsung_dsim_transfer {
 41	struct list_head list;
 42	struct completion completed;
 43	int result;
 44	struct mipi_dsi_packet packet;
 45	u16 flags;
 46	u16 tx_done;
 47
 48	u8 *rx_payload;
 49	u16 rx_len;
 50	u16 rx_done;
 51};
 52
 53struct samsung_dsim_driver_data {
 54	const unsigned int *reg_ofs;
 55	unsigned int plltmr_reg;
 56	unsigned int has_freqband:1;
 57	unsigned int has_clklane_stop:1;
 58	unsigned int has_broken_fifoctrl_emptyhdr:1;
 59	unsigned int num_clks;
 60	unsigned int min_freq;
 61	unsigned int max_freq;
 62	unsigned int wait_for_reset;
 63	unsigned int num_bits_resol;
 64	unsigned int pll_p_offset;
 65	const unsigned int *reg_values;
 66	unsigned int pll_fin_min;
 67	unsigned int pll_fin_max;
 68	u16 m_min;
 69	u16 m_max;
 70};
 71
 72struct samsung_dsim_host_ops {
 73	int (*register_host)(struct samsung_dsim *dsim);
 74	void (*unregister_host)(struct samsung_dsim *dsim);
 75	int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
 76	void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
 77	irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim);
 78};
 79
 80struct samsung_dsim_plat_data {
 81	enum samsung_dsim_type hw_type;
 82	const struct samsung_dsim_host_ops *host_ops;
 83};
 84
 85struct samsung_dsim {
 86	struct mipi_dsi_host dsi_host;
 87	struct drm_bridge bridge;
 88	struct drm_bridge *out_bridge;
 89	struct device *dev;
 90	struct drm_display_mode mode;
 91
 92	void __iomem *reg_base;
 93	struct phy *phy;
 94	struct clk **clks;
 95	struct clk *pll_clk;
 96	struct regulator_bulk_data supplies[2];
 97	int irq;
 98	struct gpio_desc *te_gpio;
 99
100	u32 pll_clk_rate;
101	u32 burst_clk_rate;
102	u32 hs_clock;
103	u32 esc_clk_rate;
104	u32 lanes;
105	u32 mode_flags;
106	u32 format;
107
108	bool swap_dn_dp_clk;
109	bool swap_dn_dp_data;
110	int state;
111	struct drm_property *brightness;
112	struct completion completed;
113
114	spinlock_t transfer_lock; /* protects transfer_list */
115	struct list_head transfer_list;
116
117	const struct samsung_dsim_driver_data *driver_data;
118	const struct samsung_dsim_plat_data *plat_data;
119
120	void *priv;
121};
122
123extern int samsung_dsim_probe(struct platform_device *pdev);
124extern void samsung_dsim_remove(struct platform_device *pdev);
125extern const struct dev_pm_ops samsung_dsim_pm_ops;
126
127#endif /* __SAMSUNG_DSIM__ */