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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/drm/bridge/samsung-dsim.h
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/* SPDX-License-Identifier: GPL-2.0+ */

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/*

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 * Copyright (C) 2022 Amarula Solutions(India)

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 * Author: Jagan Teki <[email protected]>

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 */

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#ifndef __SAMSUNG_DSIM__

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#define __SAMSUNG_DSIM__

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#include <linux/gpio/consumer.h>

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#include <linux/regulator/consumer.h>

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#include <drm/drm_atomic_helper.h>

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#include <drm/drm_bridge.h>

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#include <drm/drm_mipi_dsi.h>

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#include <drm/drm_of.h>

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struct platform_device;

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struct samsung_dsim;

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#define DSIM_STATE_ENABLED		BIT(0)

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#define DSIM_STATE_INITIALIZED		BIT(1)

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#define DSIM_STATE_CMD_LPM		BIT(2)

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#define DSIM_STATE_VIDOUT_AVAILABLE	BIT(3)

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enum samsung_dsim_type {

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	DSIM_TYPE_EXYNOS3250,

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	DSIM_TYPE_EXYNOS4210,

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	DSIM_TYPE_EXYNOS5410,

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	DSIM_TYPE_EXYNOS5422,

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	DSIM_TYPE_EXYNOS5433,

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	DSIM_TYPE_IMX8MM,

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	DSIM_TYPE_IMX8MP,

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	DSIM_TYPE_COUNT,

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};

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#define samsung_dsim_hw_is_exynos(hw) \

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	((hw) >= DSIM_TYPE_EXYNOS3250 && (hw) <= DSIM_TYPE_EXYNOS5433)

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struct samsung_dsim_transfer {

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	struct list_head list;

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	struct completion completed;

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	int result;

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	struct mipi_dsi_packet packet;

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	u16 flags;

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	u16 tx_done;

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	u8 *rx_payload;

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	u16 rx_len;

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	u16 rx_done;

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};

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struct samsung_dsim_driver_data {

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	const unsigned int *reg_ofs;

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	unsigned int plltmr_reg;

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	unsigned int has_freqband:1;

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	unsigned int has_clklane_stop:1;

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	unsigned int has_broken_fifoctrl_emptyhdr:1;

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	unsigned int num_clks;

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	unsigned int min_freq;

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	unsigned int max_freq;

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	unsigned int wait_for_reset;

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	unsigned int num_bits_resol;

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	unsigned int pll_p_offset;

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	const unsigned int *reg_values;

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	unsigned int pll_fin_min;

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	unsigned int pll_fin_max;

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	u16 m_min;

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	u16 m_max;

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};

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struct samsung_dsim_host_ops {

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	int (*register_host)(struct samsung_dsim *dsim);

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	void (*unregister_host)(struct samsung_dsim *dsim);

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	int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);

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	void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);

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	irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim);

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};

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struct samsung_dsim_plat_data {

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	enum samsung_dsim_type hw_type;

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	const struct samsung_dsim_host_ops *host_ops;

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};

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struct samsung_dsim {

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	struct mipi_dsi_host dsi_host;

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	struct drm_bridge bridge;

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	struct drm_bridge *out_bridge;

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	struct device *dev;

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	struct drm_display_mode mode;

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	void __iomem *reg_base;

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	struct phy *phy;

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	struct clk **clks;

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	struct clk *pll_clk;

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	struct regulator_bulk_data supplies[2];

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	int irq;

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	struct gpio_desc *te_gpio;

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	u32 pll_clk_rate;

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	u32 burst_clk_rate;

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	u32 hs_clock;

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	u32 esc_clk_rate;

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	u32 lanes;

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	u32 mode_flags;

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	u32 format;

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	bool swap_dn_dp_clk;

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	bool swap_dn_dp_data;

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	int state;

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	struct drm_property *brightness;

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	struct completion completed;

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	spinlock_t transfer_lock; /* protects transfer_list */

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	struct list_head transfer_list;

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	const struct samsung_dsim_driver_data *driver_data;

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	const struct samsung_dsim_plat_data *plat_data;

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	void *priv;

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};

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extern int samsung_dsim_probe(struct platform_device *pdev);

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extern void samsung_dsim_remove(struct platform_device *pdev);

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extern const struct dev_pm_ops samsung_dsim_pm_ops;

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#endif /* __SAMSUNG_DSIM__ */

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